-er -ey b-p bbb bbc bbe bbn bbo bbp bbr bbt bby bcb bcc bce bcn bco bcp bcr bct bcy be- beb bec bee ben beo bep ber bet bey bnb bnc bne bnn bno bnp bnr bnt bob boc boe bon boo bop bor bot boy bpb bpc bpe bpn bpo bpp bpr bpt bpy brb bre brn bro brp brr brt bry btb btc bte btn bto btp btr btt bty by- byc bye byn byo byp byr byt c-- cbb cbc cbe cbn cbo cbp cbr cbt cby ccb ccc cce ccn cco ccp ccr cct ce- ceb cec cee cen ceo cep cer cet cey cn- cnb cnc cne cnn cno cnp cnr cnt cny co- cob coc coe con coo cop cor cot coy cpb cpc cpe cpn cpo cpp cpr cpt crb crc cre crn cro crp crr crt cry ctb ctc cte ctn cto ctp ctr ctt cty cyb cyc cye cyn cyo cyp cyr cyt ebb ebc ebe ebn ebo ebp ebr ebt eby ec- ecb ecc ece ecn eco ecr ect eeb eec eee een eeo eep eer eet eey en- enb enc ene enn eno enp enr ent eny eo- eob eoc eoe eon eoo eop eor eot ep- epb epc epe epn epo epp epr ept erb erc ere ern ero erp err ert ery etb etc ete etn eto etp etr ett ety eyc eye eyn eyo eyp eyr eyt nbb nbc nbe nbn nbo nbp nbr nbt ncb ncc nce ncn nco ncp ncr nct ne- neb nec nee nen neo nep ner net ney nnb nnc nne nnn nno nnp nnt no- nob noc noe non noo nop nor not noy npb npc npe npn npo npp npr npt nrb nrc nre nrn nro nrp nrr nrt nry ntb ntc nte ntn nto ntp ntr ntt nyc nye nyn nyo nyp nyt nyy ob- obb obc obe obn obo obp obr obt oby oc- ocb occ ocn oco ocp ocr oct oeb oec oee oen oeo oep oer oet oey on- onb onc one onn ono onp onr ont ony oo- oob ooc oon ooo oop oor oot op- opb opc ope opn opo opp opr opt opy or- orb orc ore orn oro orp orr ort ory ot- otb otc ote otn oto otp otr ott oye oyo p-p pbb pbc pbe pbn pbo pbp pbr pbt pby pcb pcc pce pcn pco pcp pcr pct peb pec pee pen peo pep per pet pey pn- pnb pnc pne pnn pno pnp pnr pnt pny pob poc poe pon poo pop por pot poy ppb ppc ppe ppn ppo ppp ppr ppt prb prc pre prn pro prp prr prt pry pt- ptb ptc pte ptn pto ptp ptr ptt pty py- pyb pyc pye pyn pyo pyr pyt rbb rbc rbe rbn rbo rbp rbr rbt rcb rcc rce rcn rco rcp rcr rct re- reb rec ree ren reo rep rer ret rey rnb rnc rnn rno rnp rnr rnt rny rob roc roe ron roo rop ror rot roy rpb rpc rpe rpn rpo rpp rpr rpt rrb rrc rrn rrp rrr rrt rtb rtc rte rtn rto rtp rtr rtt rty ry- ryc rye ryn ryo ryr ryy tbb tbc tbe tbn tbo tbp tbr tbt tcb tcc tce tcn tco tcp tcr tct te- teb tec tee ten teo tep ter tet tey tnb tnc tne tnn tno tnp tnr tnt to- tob toc toe ton too top tor tot toy tpb tpc tpe tpn tpo tpp tpr tpt trb trc tre trn tro trp trr trt try ttb ttc tte ttn tto ttp ttr ttt tty tyc tye tyn tyo typ tyr tyt ybc ybe ybp ybr yby ycc yce yco ycp ycy yeb yec yee yen yeo yep yer yet yey yne ynn ynp yny yob yoc yoe yon yoo yop yor yot yoy ypo yrc yre yrn yro yrp yrt ytc yte ytn yto ytp ytr ytt yyb yyc yye yyt yyy